al·to·stra·tus ( l t -str  t s, -strts)n. An extended cloud formation of bluish or gray sheets or layers. [Latin altus, high; see al-2 in Indo-European roots + stratus.] |
altostratus [ˌæltəʊˈstreɪtəs -ˈstrɑː-]
n pl -ti [-taɪ]
(Earth Sciences / Physical Geography) a layer cloud at an intermediate height of about 2400 to 6000 metres (8000 to 20 000 feet)
| altostratus (lt-strts) Plural altostrati ( lt-strt ) A mid-altitude cloud that extends in flat, smooth sheets or layers of varying thickness. Altostratus clouds generally form between 2,000 and 6,100 m (6,560 and 20,000 ft) and often produce long, steady rain showers. See illustration at cloud. |
ThesaurusLegend: Synonyms Related Words Antonyms
| Noun | 1. |  altostratus - a stratus cloud at an intermediate altitude of 2 or 3 milesstratus, stratus cloud - a large dark low cloud |
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